From stealing secret documents to assassinating important figures... a secret society operating behind the scenes of this world. It is said that there is a highly skilled female spy who always succeeds in any mission... Her name is Akari Niimura! Receiving an assassination order for an important figure, what she saw at the end of the sniper scope was the figure of the man who once drove her father to his death!! Is it cold judgment that carries out the assassination mission!? Or is it burning revenge!?